missing eggs?

I got 9 baby chickens in April they all started laying with in the past month. my chickens free range during the day and go up at night they all seem to be laying in the boxes however this past week I've gotten no eggs for my 2 eastereggers can they stop laying or should I assume they are laying somewhere in the yard

They might not be laying for these reasons: They might have a health issue, they might be hiding thier eggs, they may not have proper nurtrition, thier eggs might have been stolen by a pest, they might be moulting or have stopped laying to build up body reseves.
Good luck!

They are free fed layer pellets and free range every day plus get fresh fruits, scratch and meal worms as treats. I don't think its pest unless they only like blue eggs The girls all act and seem to be in great health. They are 6 months old could they already be molting? The nody reserve maks sense we are in south Carolina so its still very warm here 70-80 day time 60s at night